Practice question

In traffic signal construction, what does 'backfill' refer to?

  1. The concrete poured for the foundation
  2. The material used to refill an excavation after conduit or other underground work is installed
  3. The cable pulled through conduit
  4. The grout placed under the pole base plate

Answer: B — The material used to refill an excavation after conduit or other underground work is installed

The correct answer is shown above. Try the full quiz for additional practice.

Practice more: IMSA Signal Construction Practice Questions - IMSA Traffic Signal Construction Technician Level II Certification Exam Exam →